57420697 has 4 divisors (see below), whose sum is σ = 57438820. Its totient is φ = 57402576.

The previous prime is 57420689. The next prime is 57420731. The reversal of 57420697 is 79602475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9865881 + 47554816 = 3141^2 + 6896^2 .

It is a cyclic number.

It is not a de Polignac number, because 57420697 - 2³ = 57420689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57420197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2922 + ... + 11107.

It is an arithmetic number, because the mean of its divisors is an integer number (14359705).

Almost surely, 2^57420697 is an apocalyptic number.

It is an amenable number.

57420697 is a deficient number, since it is larger than the sum of its proper divisors (18123).

57420697 is a wasteful number, since it uses less digits than its factorization.

57420697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18122.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 57420697 is about 7577.6445548732. The cubic root of 57420697 is about 385.7946078135.

The spelling of 57420697 in words is "fifty-seven million, four hundred twenty thousand, six hundred ninety-seven".